Nestled on the departure/arrival floor exists a little enclave called the "Malton Airport Gallery" at Toronto's International Airport. Who says this airport has no culture? LOL The previous exhibit had nothing but typewriters from the teletype days. I guess it had some relevance to aviation?
While exiting the doors from the secure side in Terminal One you will walk by this exhibit if you don't proceed downstairs to collect baggage. Anyone can visit. So being an ex-mat man I had to go in and take a few pics. I was never taught the intricacies of these instruments (weather observers, weather briefers and flight service personnel deal with this stuff). We meteorologists sat in the ivory tower miles away from the weather and forecasted from the data collected. It took lots of science and post secondary education to "screw up the forecast." :)
Before or after a flight take a "look see." It sure brought back memories for me.
An example of various rain and snow gauges.
This is a display of the latex weather balloon which soars to 100,000 feet before bursting.
Weathermen have big "prophylactics" LOL
Devices to measure temperature and humidity. The one in the bottom left corner is a "Sling Psychrometer."A psychrometer consists of two thermometers, one which is dry and one which is kept moist with distilled water on a sock or wick. The two thermometers are thus called the dry-bulb and the wet-bulb. You swing this around like a noise maker on New Year’s eve for a couple of minutes. Then consult charts to get the dewpoint temperature.
The dewpoint temperature is the temperature in which you must cool air to acheive saturation at a constant pressure. Every pilot knows (or so I thought) when the temperature and dewpoint spread is TWO degrees or less...expect FOG. I asked the last new hire class this very question and no one knew. Proving a weather book is desperately needed. :)
This is a radiosonde package which transmits altitude, temperature and humidity as it ascends attached to the weather balloon. As the balloon is tracked winds can be determined. Apparently the American Weather Service want these things back when they return to earth. Environment Canada gives a small explanation of what it does on the package but doesn't want it back. They also remind you it has a corrosive battery...don't eat the battery!
Campbell-Stokes Sunshine recorder
The official instrument used in Canada since 1881 for recording bright sunshine (sunshine intense enough to burn a a mark on the recording paper). It consists of a glass sphere 10 cm in diameter that is mounted in part of a spherical bowl to which a cardboard is affixed. The card is scorched by the sun’s rays and simple measurement of the length of the scorch marks gives the number of hours of bright sunshine for the day.
This sunshine recorder has been sitting idle on Canada's east coast this summer. I think they cancelled summer.
Many think it's the weatherman's crystal ball.....not so...we throw darts instead. :)